Quartz-mill.



PATENTED um-14, 1906. J. Y. BYERS & J. W. MYER.

QUARTZ MILL. ATION PI E \JbhnYByans; M nyentom No. 828,456. PATENTED-AUG.14, 1906. J. Y. BYBRS & J. W. MYER.

QUARTZ MILL. APPLIOATION FILED 'APR.19.1905.

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.UQUARITZ-JMILL.

No. sas es,

This ention relates to quartz-mills such I ong the objects of the invention are to sd improve the eohstruetion of the mill a to enabl'ejit to operate with 2 minimum degree jofiriction to reduce th'nuniber'of the'ii'cessay pjertsend to'simplify the construction *of the" same toso" Construct" the ptitsthet the mill mey'b'e easily and q e ly assembled or tiken' zip art'for storage or transportation to make the individuahpe'rt's 'is' light as possible "consistent with strength in order to facilit ate the transportation of the mill in mountainous regions; Where it Will frequently jhsv 'to' ibe-tran? oifted{upon the packs of pejck-eni'inztls; a'I'i gen rany't end improve the construction.

"these: and lothe r ends in view, which will "readily a pear astthe nature of theinvm the improv d constructionhnd novelrrbe hereinafterfully described, andi'pen :ticularlypoint'ed Oiitfin the cl'etir nsi" *Inthe accomp'anyingidrawings has been illustrated" a simple and preferred form'fof "embodiment of the inventionfit being, however, understoodthetno limitation is necessarilj made to'the" r'ecise structural details therein exhibited, unmet the''right is reserved to enygcha nges;alterations, thdIIIOdiin the scope of the invention and Withoutfde- Insaid drawings, Figure 1 is a perspective View of fi'QueLr'tz-mill construct'ed' inaccgirdtfice vi r'ith the principles of theinvention,

showirr the same operation. Fig. 2 is a vertica sectional view ofthe same. F ig. 3

is'eperspective detail "view of the cylindersupporting yoke. ,Fig; 4' is a perspective detail "view of'the collar upon W 'ch thecylin- Corresponding are indicated by. throughout I 1perts in the several figures ike characters of reference Specification of Letters Patent. A li'etioii fi eli' 1 5 19, 906. see; 5 3.

* Connected with the cylinder 2 is a suspen Patented Aug. 14 1906.

tionary grinding member 1 and an outer revoluble grinding, member. 2. r The inner grindider"constitutingby {itself eem-enamel. The top; 46f saidinner grindingrneiiiberhes a central opening" 5, "and th cunfi'fe s'tid grinding memberlies" seengshtw iat- I lit 1 eange iryr sufig spot the upper edge bf thrfiing l2.""""" The innfer grinding member is supported said fThe" letteris supported in opera- 'tive position upon-e foundstien 57-, suitejbly 'constructedof 'lank's and timbersfenliej'in ppo t n -Fl f 18 s 'i if r li posed m'su'ch a manherfthateicc'ess my be "had to themes side thereof T6 1116" pm- Z pose of assemblingthei'hillfas Will be I 'IjS- Y ently described: The bise pan 15"arf1 tithe supperting plenk 18 are "provided with epertnres 19I20fvvhich arein're'gist'ry with the ep- 'ho oks-22 This yokeis prefer ebly cehstruee ed of spring steel, andthehooked erm's'thereof are inserted through 'oppdsitely disposed feed-openings '9 in the toplofthe cylinder; the hooks '22 enga 'inga ain'st the under sidejof the latterii "yo ef2l has I threladfed lpening 23 for the p'essa'ge of aset 'screvvfl l,

w ie w ewie"we x12 The parts the mill are assembled for op eration by means of a central vertical shaft or post 26, provided with a stationary flange or collar 27 and screw-threaded at its lower. and upper ends, as shown at 28 29, respectively. The upper end of the shaft is also provided with a groove or spline 30 for the reception of a blind-key 31, whereby the col lar 13 is secured against rotation upon said shaft.

In assembling the parts of the improved mill the base-pan 15 is placed upon the foundation and the grinding member 1 is supported upon the base-pan, and the shaft 26 is then inserted through the apertures 5, 19, and until the collar 27 rests upon the top of the grinding member. A nut 32 is now adjusted upon the lower end ofthe shaft and tightened against the under side of the foun- 2o dation-p'lank until the grinding member 1 is absolutely, secured against rotation. The cylinder 2 is now placed in position with its oblique lower edge resting upon the shoulder or offset 3 of the inner grinding member, and the bushing13'is next adjusted in position, followed byjthe key 31, whereby it is jsecured against rotation. A nut 33 is now "mounted upon the upper end of the shaft, but is not entirely tightened against the upper side o'f'the' bushing 13. By tightening the setscrew' 240i the suspending-yoke 21 against the upper "end of the shaft 26 the cylinder 2 may now be slightly eased from its seat upon the shoulder 3, after which the nut 33 is moderately tightened and the lock-nut 25 is screwed home to prevent displacement of the set-screw 24, which latter regulates the degree of fineness of the output. The material to be ground may now be shoveled into the 40 hopper 10 and the cylinder may be rotated by power of any description. For purposes of illustration the device has in Fig. 1 been shown equipped with a sweep 34 and a lead pole 35 for the attachment of horse or other animal power, the sweep being provided with a ground-enga ing runner 36.

The operation 0 the device is obvious. The material to be operated upon is gradually crushed and disintegrated between the walls of the grinding members, the distance between which gradually decreases until the crushed material finally escapes, as powder or pulp, between the grinding-faces formed by the shoulder 3 and the oblique edge 7 of the respective grinding members. The spiral groove in the inner grinding member assists in feeding the material in adownward direction but said groove may be modified or dispensed with, if desired.

It will be seen that under this construction the actual support of the revoluble grinding member or cylinder is the point of the setscrew 24 and that consequently there is practically no friction between the parts of the mill. It is true, however, that in operation the material escaping between the grindingfaces 3 and 7 wil force the cylinder 2 in an upward direction until the upper edge of its flange 11 bears against the under side of the flange 14, upon the bushing 13, which latter is held against rotation upon the shaft by the key 3 1 and against longitudinal displacement by the nut 33. Friction between the op)- posing faces of the parts 11 and 14 may 0 viously be reduced by lubrication or by the use of antifriction devices of any well-known and approvedconstruction.

From the foregoing it will be seen that a mill has been provided for the purpose of crushing quartz which is light, durable, and of great simplicity, while practical experience has demonstrated the fact that its capacity greatly exceeds that of many other mills of much greater weight.

An important consideration in connection with this im roved device is the facility with which the neness of the product may be regulated. Another very important advantage resides in the facility with which the mill may be taken apart and again assembled without the slightest danger of losing or mis lacing the parts.

aving thus described the invention, what is claimed is 1. A base member, an inner grinding member, a central shaft, and clamping means assembling said base member, grinding member and shaft positively against rotation; in combination with a grinding-cylinder, a sus pending yoke or hanger for the same, and a set-screw extending through said yoke and bearing upon the upper end of the shaft to support the cylinder for rotation.

2. In a grinding-mill, a central shaft, a base and a grinding member rigidly assembled thereby, a flanged bushing slidably engaging the upper screw-threaded end of the shaft, and means for preventing said bushing from rotating upon the shaft; in combination with an outer grinding-cylinder engaging said flanged collar, means for preventing longitudinal displacement of the latter upon the shaft, and means including a set-screw bearing against the upper end of the shaft for supporting the grinding-cylinder in operative position upon said shaft.

3. A grinding-cylinder having feed-openings, in combination with a resilient suspending-yoke having inturned hooked ends sprung into and engaging the cylinder through said openings.

4. In a grinding-mill, a central stationary supporting-shaft, a grinding-cylinder supported for rotation upon said shaft by means including a bushing upon a threaded portion of the shaft, a yoke having a threadand a grinding member rigidly assembled thereby, an outer grinding-cylinder, a suspending-yoke connected with the latter, and a set-screw threaded through said yoke and bearing upon the central shaft.

6. In a grinding-mill, a central shaft having threaded portions at its upper and lower ends and provided With a longitudinal groove at its upper end, a base and a grinding member assembled by said shaft, an outer grind: ing-cylinder, a yoke connected With the latter, a set-screw threaded through said yoke and bearing upon the upper end of the shaft,

a flanged bushing upon the latter engaging the grinding-cylinder, a key securing said 15 bushing against rotation upon the shaft, and a nut upon the latter securing said collar against longitudinal displacement.

In testimony that We claim the foregoing as our own We have hereto affixed our signa- 2o tures in the presence of two Witnesses.

J OHN Y. BYERS. JAMES W. MYER. Witnesses:

G. T. VERNON, A. B. YATES. 

